Air-compressor.



W. F. ROBBINS.

AIR COMPRESSOR. APPLICATION FILED MAY 15. 1914 Patented July 120., 1915.

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AIR COMPRESSOR.

APPLICATION FILED MAY-15.1914.

Patented July 20,

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stopping t e rotational movementjof the; win wheel and the rotatable SIIPEICiItIHg.

' frame thereof when the air tank is ed to WILLIAM F. nonnms, or SCRANTON, rnnnsrnvama.

AIR-GOMPRESSQR.

Specification of Letters Patent. Patented July 20, 1915.

Applieation'flled May 15, 1914. Serial No. 838,729.

To all whom it may concern:

. Be it known that I, WILLIAM F. ROBBINS, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented cer-' tain new and usefullmprovements in Air- Oom ressors,=of *which the following is a speci cation.

This invention relates to an air compres sor and more particularly to a windmill driven com ressor especially designed for house and actory use.

An object of the invention is the provision'of a device of this character embodying an air compressor, tank and pressure controlled-device for automatically closing communication between the compressor and t'ankwhen the air pressure inthe tank ex ceeds a predetermined value.

Another object is the provlsion of auto matically o erated brakes for retardingand itscapacity.

a ,With these and, other objects in view, the

invention consists in the novel construction,

- new on the.

. pressure controlled mechanism.

arrangement and 'combination'of parts as will be. hereinafter specifically described,

"claimed and illustrated in the accompany ing drawings, in'which-- Figure 1 represents a side elevation of the complete apparatus, Fig. 2, represents a verticalsectional'view on the line 2-2 of Fig.

,1, l ig. 3 represents a horizontal sectional ne 3-3 offigure, and, Fig. 4.

represents an enlarged sectional view of the Referring to the drawing in detail, wherein similar reference numerals'designate corresponding parts throughout the several views, the numeral 5 indicates a pair of an nular members concavo-convex in formation, said members being spaced and suitably s'ecuredin spaced relation by the vertically disposed bars 6. The frame consisting of the'barse and annular members 5 is supported in elevated position by the. in-

clined standards B. Annular members 9 are arrangedf,above andf'below the upper and lower annular members 5, respectively, andf'fj, are secured'finspaced'relation by the rods 10 suitably bolted at their opposite'ex-tremities to the annular members 9. f The annular members 9 are concavo-convex in cross section, and provide a channel between the anand a suitable manually I valve 39 is also provided in said pipe.

' nular member s 5 inwhich balls 11 are disposed. The lower ends of the inclined uprlghts or standards 8 are suitably anchored in the ground andnon-rotatably support the bars 6 and the inner annular members 5, and

' the annular members 9 and the rods 10 are rotatable in thestationary frame.

A bearing 12 is secured to the upper face of the inwardly directed plane portion 13 *of the top annular member 9 and rotatably supports a shaft 14 to the outer end of which is secured a wind wheel 15. The opposite end of the shaft 14 is rotatably mounted in a socket 16 formed on the end of thesteni 17 of the vane 18. A vertically disposed shaft 19 1s rotatably mounted concentrically.

within the disks or annular members 5 and 9 and is rotatably sup orted in a suitable bearing 20 secured to t e lower annular or disk member 9. A bevel gear wheel 21 is fixed to the upper end of the shaft 19 and meshes with a bevel gear wheel 22 secured adjacent the inner end of-the wind wheel shaft14.

disposed legs 23: and horizontally disposed side rails 24 is mounted below the wind wheel and its cofiperatin parts and is provided at one end with a s aftv 25 u on which is fixed a bevel gearwheel 26 mes ing with a bevel gear wheel 27 fixed to the lower end of the vertically dis osed shaft 19. A pin- 28 is fixed eccentrica y in the inner face of the bevel gear wheel 26 and is pivotally connected with a pitman 29 connected with a suitable cross head 30 reciprocable between suitable guides '31 secured to the side rails 24 The cross head 30 is connected with a piston rod 32 carriedby .of the frame structure.

thepiston 33 reciprocable within a c linder 35 also secured to the side rails 24. he cylinder 35 is provided with a suitable air inlet port ,(not shown) and is adapted to force 'air' through a pipe line indicated generall b the numeral 36in Fig. 1. suitable e co valve 37 is interposed inthe' pipe line 36 to prevent air forced into the tank 38 from finding its way back into'the c linder' 35, opera l'e cut-01f .A cylindrical casing40 communicates with s .the 'pipe-line'36 'th'r'ougha coupling 41, and a piston 42- is mounted for sliding movement within the casing 40 and carries a stem or red 43 having its upper end 44 bifurcated.

The lower portion of the casing 40 is pro- A frame structure consisting of vertically vided with an aperture in which is secured one end of a pipe 45. A pipe 46 communicates with the tank 38 above the pipe line 36 and extends into the upper portion or dome 47 of a second cylindrical casing 48 in which is slidably mounted a piston 49 carrying a stem or rod 50 projecting through the lower end of the casing provided with a bifurcated end 51. A short pipe connection 52 connects the medial portion of the cylinder or casing 48 with the'pipe 45.

A supporting bracket 53 is secured in a vertical position above the side rails 24 of the frame structure and is provided with a pin 54 on which is pivotally mounted a lever 55 secured at one extremity between the bifurcations 51 of the piston rod 50 and at its opposite end between the bifurcation 44 of the piston rod 43. The end of the lever.

55 connecting with the piston rod 50 is normally retained in elevated position by the tension of a spring 57 disposed in a suitable casing 58 and bearing against the under side of a piston 59 carrying a stem 60 positioned through the cap 61' and having pivotal connection with the lever 55 at '62 intermediate the pivotal mounting 54 of said lever and the pivotal connection between the end of said lever and the piston rod or stem 50. The connection between the piston 59 and stem 60 is preferably adjustable whereby the force exerted by the spring 57 against said piston and the lever 55 may be ad usted as desired. 7

The pipe 45 into which the air escapes when the tank 38 is filled to capacity communicates with a cylinder 64 secured to the end of one of the side rails 24 and in which a piston '(not shown) is slidably mounted carrying a stem or rod 65 carrying at its upper end a brake shoe adapted to bear against the under face of the bevel gear wheel 27 to retard the movement of said wheel and the shaft 19. The pipe 45 also communicates through a branch pipe 66 with a second cylinder 67 in which is slidably mounted a piston (not shown) carrying a rod or stem also provided with a brake shoe adapted to engage the under face of the bottom annular member 9 thereby preventing the rotatable frame from being rotated by the vane when the wind wheelis not required for use supporting frame. I

In operation, the wind wheel 15 is operated by the wind, rotating the shaft 14 and the shaft 19 through the bevel gear wheels 21 and 22, and rotating the horizontally disposed shaft 25 through the gear wheels 26 and 27. The movement of the bevel gear wheel 26 is transmitted to the compressor piston 33 through thepitman 29 and piston rod 32, thus drawing air into the cylinders 35 and forcing it into the tank38' through the pipe line 36 and valves therein When the pressure in the tank 38 exceeds a predemamas termined value, the air pressure in the pipe 46 forces the piston 49 downwardly within the cylinder 48 pressing the adjacent end of the lever 55 against the tension .of the spring 57 and raising the opposite end of said lever, thus raising the piston 42 in the cylinder 40. As the pistons 49 and 42 are moved past the open ends of the pipe 45 and branch pipe 52, the air pumped from the cylinder 35 is permittedto flow through the pipe 45 and is conducted into the cylinders 64 and 67.

The air pressure in the last named cylinders forces the pistons therein upwardly frictionally engaging the brake shoes carried thereby against the bevel gear wheel 27 and bottom annular member 9, thus eflectively retarding and stopping the rotational movement of the wind wheel and rotatable supporting frame thereof.

What I claim is 1. In combination, ,a support,-a frame rotatable in said support, a wind Wheel rotatably mounted on said rotatable frame, a vane fixed to said rotatable frame, an air pump, driving connections between said wind wheel and said air pump, a storage tank, valved connections between said air pump and said'storage tank, and pressure controlled means communicating with said tank for retarding the movement. of said rotatable frame.

2. In combination, a support, a frame rotatably mounted in said support, a Wind wheel rotatably mounted on said rotatable frame, a vane secured to said rotatable frame, an air pump, driving connections between said wind wheel'and said air pump, a storage tank, a valved connection between said air pump and said storage tank, and pressure controlled means communicating with said, storage tank for simultaneously retarding the operation of said rotatable frame and said driving connections.

3. In combination, a support, a frame rotatable in said support, a wind wheel rotatably mounted on said rotatable frame, a vane fixed to said rotatable frame, an air pump, driving connections between said wind wheel and said air pump, a storage tank, a valved connection between said air pump and said storage tank, a cylinder mounted under said rotatable frame, a similar cylinder mounted under said driving connections, a piston mounted in each cylinder,

a piston rod secured to each piston, a brake shoe secured to the free end of each piston rod, one of said brake shoes being adapted to engage said rotatable frame and the other being adapted to engage said driving connection, pressure controlling means communicating with said storage tank, and said cylinders whereby said brake shoes can be applied and the rotation of said rotatable frame and said driving connecting means is stopped.

4. In combination, a support, a frame rotatable in said support, a wind wheel rotatably mounted on said rotatable frame, a vane fixed to said rotatable frame, an air pump, driving connections between said wind wheel and said air pump, a' storage 1 brake shoe secured to the free end of each piston rod, one of said brake shoes being adapted to engage said rotatable frame and the other being adapted to engage said driving connection, a cylindrical caslng, a piston in said casing, a second cylindrical casing communicating with said pump, a piston mounted in said casing and normally seating over said communication between the pump and easing, an an plpe connecting said second casing and said cyllnders, a pivoted lever connecting said casings, an over-flow pipe connecting said storage tank and said first named casing, and beingadapted to operate the piston in said casing when the pressure in said pipe exceeds a predetermined value whereby the piston in the sec ond named casing will be unseated allowing air from said pump to flow through the pipe connecting the casings and the cylinders thereby raising said pistons in the cylinders and applying the brakes.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM F. ROBBINS. Witnesses W. F. VAUGHAN, M. R. SPEILMAN. 

